Bruchou & Funes de Rioja is favoured by major real estate development, oil and gas, food, paper production, and chemical companies for advice on environmental compliance and eliminating potential risks. The department facilitates this by providing guidance on internal regulations and meeting international environmental standards and industry-specific best practices. The team is also skilled in representing clients in environmental disputes before the criminal and civil courts and administrative bodies. The team is led by Pablo Crimer, who was elevated to the partnership in April 2025 and is immersed in environmental and mining matters. He regularly advises companies on ESG frameworks, compliance, permitting, and potential remediation liability. Senior associate Dolores Cattaneo also specialises in environmental and mining law; she assists her clients with the necessary due diligence at the outset of energy transition projects or company acquisitions. Mining practice co-heads Sergio Arbeleche and Sebastián Vedoya collaborate with the environmental team to secure mining exploration permits and environmental audit passes.

Environmental specialist Estudio Gabriel Macchiavello supports industrial and corporate clients with environmental permitting, regulatory compliance, and dispute resolution. On the contentious front, its work includes mass and toxic tort cases, administrative proceedings, and remediation processes, while its transactional practice covers M&A deals where environmental issues are a key consideration. The practice is led by litigation titans Pedro Zambrano, Hugo Bunge and Juliana Salvucci, who specialise in environmental conflicts and disputes, including administrative and judicial proceedings. Belén Counduros focuses on helping clients obtain environmental permits, licences, and authorisations, while insurance and reinsurance specialist Ramón Santamarina advises on environmental liability policies and corporate and regulatory matters. The team has the advantage of a deep bench which also includes Florencia Borsani, who is active in large-scale lawsuits and prepares expert reports, and Andrea Karina Gonda, who concentrates on environmental audits and health and safety matters.

Marval O’Farrell Mairal defends large companies, including Volkswagen Argentina, Xstrata, and Glencore, in criminal investigations and environmental claims brought by government authorities and NGOs concerning alleged contamination and petitions for injunctions, damages, and remedial costs. The department also represents claimants who wish to stop companies from engaging in polluting activities and preserve natural reserves. On the transactional side, the team assists with environmental due diligence during corporate acquisitions and divestments. Practice head Francisco Macías advises energy and natural resources sector clients on obtaining permitting rights and the environmental implications involved in land sales and purchases. He is supported by senior expert associate Gabriel Fortuna, who represents oil and gas, energy, and food industry clients in regulatory matters, administrative proceedings, and class actions.

Pérez Alati, Grondona, Benites & Arntsen boasts a varied environmental practice which acts for NGOs, private landowners, and companies across the oil and gas, agribusiness, and manufacturing sectors, with a strong client roster that includes Rewilding Argentina. The team also defends companies accused of regulatory non-compliance and environmental damage by government bodies and handles related appeals. Public law specialist Nicole Jaureguiberry heads the team dedicated to conservation of natural resources, assisting companies with securing permits for the authorisation of projects and providing representation during litigation and administrative proceedings before the water and environmental authorities. The team recently welcomed two new associates, Analía Ruiz Moreno and Valentina Iriarte, from positions at the University of Buenos Aires and Mitrani Caballero, respectively.

VHQ Ambiental, formerly known as Venditti Hierro Quinteros – Derecho Ambiental, offers comprehensive support across all environmental matters, including advising on regulations, permitting, and licensing applications, and reviewing internal company policies. The practice also supports companies during compliance audits and remediation works and advises on liability risks during the sale and purchase of industrial premises. On the contentious side, the firm defends clients before environmental authorities and throughout civil and criminal cases. At the forefront of the team is María Magdalena Venditti, who represents national and multinational clients during environmental litigation and remedial clean-up processes, and Lucía Sesto, who provides oil and gas, food, and chemical companies with regulatory advice and support during administrative sanctions proceedings. Former practice head Mariana Hierro left the firm in February 2025.

Allende & Brea‘s ESG and sustainability practice assists clients such as Minera del Altiplano and Ferrero Argentina with all environmental issues encountered during project development, construction, financing, and real estate acquisition. This includes advising on regulatory requirements, compliance audits, and obtaining and renewing permits. The team also defends clients during administrative proceedings and mediations regarding alleged polluting activities. The department is co-led by project finance and administrative specialist María Morena del Río, who advises on permitting applications and individual and collective environmental litigation. She is joined as co-head by natural resources, energy, and M&A lawyer Florencia Heredia, who advises companies on green loans and ESG matters relevant to project development. Senior associate Martín Alejo Prieto represents clients during sanctioning proceedings and advises on potential remediation liability. Since the conclusion of research, Morena del Río has left the firm.

Brons & Salas is often the first port of call for companies seeking environmental advice on industry-specific operations and projects, such as managing chemical substances and explosives and developing treatment plants. The practice advises on obtaining permits from the relevant authorities and on risk mitigation, in addition to defending clients against complaints concerning environmental damage. Corporate, M&A and environmental lawyer Guillermo Malm Green leads the department; he frequently draws on this combination of expertise to advise companies on ESG frameworks and is consulted by local provinces, government bodies, and control agencies to review important environmental legislation. The practice is bolstered by senior associate Maria Agostina Mandrini, an experienced environmental litigator who assists with compliance, due diligence and remediation matters.

Nicholson y Cano Abogados advises clients across the oil and gas, energy, mining, and agribusiness sectors in relation to their day-to-day business operations such as oil drilling and constructing pipelines. This includes advising on environmental regulation, compliance audits, and preventative measures to avoid the risk of remediation claims. The team is also well equipped to represent clients in litigation concerning alleged environmental damage, including in cases at the Supreme Court level. The practice is headed by Horacio Payá, who assists energy and E&P companies with navigating the permitting approval process and environmental issues encountered during real estate and company acquisitions. He is supported by Martín Rodriguez, who defends clients in environmental litigation where damages and remedial works are sought.

Baker McKenzie is home to a multi-skilled team which provides the likes of Shell, Proctor & Gamble, and Colgate with day-to-day environmental services. The team assists clients with securing mining permits and authorisations, advises on compliance and avoiding environmental harm, and defends clients against claims regarding environmental contamination or remediation works. The practice is co-led by seasoned litigator Santiago Maqueda, who represents large oil and tech companies in lawsuits regarding polluting activities and misleading environmental claims. Fellow co-head Ezequiel Artola is proficient in energy, mining, and infrastructure matters, as well as general commercial and regulatory issues.

Beccar Varela‘s environmental and climate change practice advises oil and gas, cement, and construction companies on regulatory compliance, permitting applications, and mitigating ecological damage risks. The firm also represents clients during civil and criminal investigations and litigation regarding allegations of waste mismanagement and contamination. Department head Manuel Frávega is knowledgeable in ESG and public affairs matters, and often performs environmental due diligence during corporate and asset acquisitions. He has the backing of environmental and ESG semi-senior associate Florencia Marcelli, who advises clients suspected of causing environmental damage and potentially subject to penalties.

Bomchil‘s environmental team is noted for its strength in litigation concerning transnational environmental matters, combining expertise in administrative law, international public law, and the energy and mining sectors. The dedicated ESG practice focuses on assisting companies with the changes required to meet the 203o Agenda and the Paris Agreement’s targets for sustainable development and carbon neutrality. The team is jointly led by María Inés Corrá, a key contact for environmental regulatory matters and disputes, and Cristian Galansky, who is frequently sought out to advise clients in the natural resources and environmental services sectors on compliance and administrative and judicial proceedings.

Martínez de Hoz & Rueda offers ‘detailed and in-depth technical knowledge’ on environmental sustainability, regulatory compliance, arbitration and litigation. The practice is jointly led by public law specialist Juan Cruz Azzarri, who represents oil and gas companies in litigation initiated by NGOs; transactional and regulatory lawyer Tomás Lanardonne, who advises on regulatory frameworks and remediation liabilities; and energy specialist Pablo Rueda, based in Uruguay, who has been involved in environmental disputes involving asbestos.

O'Farrell’s public and economic regulation department counts strengths in environmental and natural resource matters among its capabilities. The team routinely advises energy, telecoms, and construction companies on environmental issues affecting their business operations and proposed corporate and land acquisitions. On the contentious side, its lawyers represent clients in proceedings before judicial and government authorities regarding the suspension of permits and receipt of environmental stop notices. Seasoned litigator Jorge Muratorio heads the practice; he advises companies on ESG matters and regulatory issues affecting bidding processes and proposed developments. Agustín Siboldi and Ana Belén Micciarelli also counsel clients on industry-specific compliance, regulatory issues, and due diligence at the outset of projects. Additional talent within the team includes senior consultant María Fortuna and associate Rebeca Fernández.

Pozo Gowland Abogados‘ environmental practice frequently defends large oil and gas and energy companies facing allegations of environmental and property damage. The firm delivers pre-litigation advice and advocacy in individual and collective lawsuits and administrative proceedings brought by private landowners and governmental bodies. Gustavo Campobassi, who also leads the litigation department and is well versed in handling administrative actions and claims before national and provincial authorities, leads the team alongside María Rossi, who is skilled in arbitration and advises on compliance with environmental regulatory frameworks.

Tanoira Cassagne Abogados fields an environmental practice that is adept at handling both litigation and advisory work. The team is the trusted advisor of industrial companies being pursued for remediation costs, damages, and fines due to alleged ecological degradation and health and safety violations. The practice is led by experienced trial lawyers Bernardo Cassagne, who provides counsel regarding environmental non-compliance, and Ignacio González Zambón, who advises governmental bodies on project development and real estate developers facing challenges from environmental activists.